Enhancement of room temperature stretch formability via grain boundary sliding in magnesium alloy

Somekawa, Hidetoshi; Kinoshita, Akihito; Washio, Kota; Kato, Akira

doi:10.1016/j.msea.2016.09.014

Cited by 47 publications

(9 citation statements)

References 43 publications

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“…It is well known that the hexagonal close packed (HCP) crystal structure for Mg alloys can only supply a limited number of available slip systems at room temperature. Moreover, for wrought magnesium alloy sheets, a strong basal texture can usually be generated after the traditional rolling process, which further degrades their stretch formability at room temperature [ 6 , 7 , 8 , 9 , 10 ]. As a result, the wide applications of Mg alloys, especially for the wrought sheets, have been restricted by their poor room temperature ductility and formability.…”

Section: Introductionmentioning

confidence: 99%

Effect of Final Rolling Temperature on Microstructures and Mechanical Properties of AZ31 Alloy Sheets Prepared by Equal Channel Angular Rolling and Continuous Bending

Shi

Liu

et al. 2020

Materials

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The effects of final rolling temperature on the microstructures, texture and mechanical properties of AZ31 Mg alloy sheets prepared by equal channel angular rolling and continuous bending (ECAR-CB) were investigated. Extension twins {10–12} could be observed in the ECAR-CB deformed sheets. The increase in the number of {10–12} extension twins with increasing final rolling temperature might be attributed to the larger grain size and faster grain boundary migration. For all the ECAR-CB sheets at different final rolling temperatures, the deformation texture contains a basal texture component and a prismatic texture component, whereas the annealing recrystallization texture becomes a non-basal (pyramidal) texture with double peaks tilting away from normal direction (ND) to rolling direction (RD). With increasing final rolling temperature, the tilted angle of double peaks of annealing recrystallization non-basal texture increases. In addition, the plasticity and formability of ECAR-CB-A (ECAR-CB and then annealing) AZ31 Mg alloy sheets at room temperature can be improved by increasing the final rolling temperature.

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Section: Introductionmentioning

confidence: 99%

Effect of Final Rolling Temperature on Microstructures and Mechanical Properties of AZ31 Alloy Sheets Prepared by Equal Channel Angular Rolling and Continuous Bending

Shi

Liu

et al. 2020

Materials

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“…Owing to the advantages of magnesium alloys with high specific strength, high specific stiffness, and low densities [1,2], wrought magnesium alloys have great potential in various structural applications, particularly in the automotive, communications, and military fields [3][4][5]. However, the inherent close-packed hexagonal structures of magnesium alloys usually result in strong basal texture, poor ductility, and formability, which severely limits its wide-range commercial applicability [6].…”

Section: Introductionmentioning

confidence: 99%

Effect of Loading Direction on the Tensile Properties and Texture Evolution of AZ31 Magnesium Alloy

Han

Chu

et al. 2021

Crystals

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Samples were cut from an extruded AZ31 magnesium alloy bar for uniaxial tensile and EBSD characterization tests. The long axis and bar extrusion directions were 0° (T0 sample), 45° (T45 sample), and 90° (T90 sample). The effects of loading direction on the tensile behavior, microstructure, and texture evolution of the magnesium alloy were studied. Results show that the obvious mechanical anisotropy of tensile behavior is affected by the loading direction, and the T0 sample with a grain c-axis perpendicular to the extrusion direction has a strong basal texture and high flow stress and yield strength. The loading direction has a significant influence on the microstructure characteristics of different samples, especially the number of {10–12} tensile twins and {10–11} compression twins. Texture evolution results show that the loading direction and the effect of deformation mode on the deformation mechanism lead to variations in texture evolution: the basal slip and prismatic slip during the plastic deformation of the T0 specimen, the compression twin of the T45 specimen, and the tensile twin of the T90 specimen.

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“…In consequence, the improvement in ductility seen with grain refinement and texture weakening has been rationalized in terms of an increase in activated deformation modes [2][3][4][5][6][7][8][9][10][11][12][13][14]. Grain refinement is attractive from a practical viewpoint because it increases both ductility and strength [5][6][7][8][9][15][16][17][18][19][20][21][22][23] and its benefit has been explained in terms of increased non-basal slip [24][25][26] and/or grain boundary sliding [10,11,27]. In a number of cases, the concomitant suppression of twinning activity has also been emphasized [28,29].…”

Section: Introductionmentioning

confidence: 99%

A rationale for the influence of grain size on failure of magnesium alloy AZ31: An in situ X-ray microtomography study

et al. 2020

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Enhancement of room temperature stretch formability via grain boundary sliding in magnesium alloy

Cited by 47 publications

References 43 publications

Effect of Final Rolling Temperature on Microstructures and Mechanical Properties of AZ31 Alloy Sheets Prepared by Equal Channel Angular Rolling and Continuous Bending

Effect of Final Rolling Temperature on Microstructures and Mechanical Properties of AZ31 Alloy Sheets Prepared by Equal Channel Angular Rolling and Continuous Bending

Effect of Loading Direction on the Tensile Properties and Texture Evolution of AZ31 Magnesium Alloy

A rationale for the influence of grain size on failure of magnesium alloy AZ31: An in situ X-ray microtomography study

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